Bridge deck splicing joint reinforcing support structure suitable for alpine regions

Abstract

The application discloses a bridge deck splicing joint reinforcing support structure suitable for high-cold areas and belongs to the technical field of bridges.The bridge deck splicing joint reinforcing support structure comprises a box girder body, a bridge column, an insert type hot melting flow guide assembly and a joint reinforcing support mechanism.The bridge column comprises a support column and a tray installed on the top of the support column.A mounting groove is formed in the middle of the tray, and the splicing positions of the two adjacent groups of box girder bodies are located in the mounting groove.The insert type hot melting flow guide assembly is a three-section structure and comprises a main heat guide plate and two auxiliary heat guide plates symmetrically arranged on the two sides of the main heat guide plate.The top of the main heat guide plate and the two auxiliary heat guide plates is connected with hot melting blades.The joint reinforcing support mechanism is divided into two groups and symmetrically installed on the support column, and the two groups of joint reinforcing support mechanisms are located on the two sides of the tray.The bridge deck splicing joint reinforcing support structure can effectively solve the problem that the bridge splicing joint is expanded due to the influence of the environment on the bridge, thereby improving the stability and safety of the bridge splicing joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridges, in particular to a bridge deck splicing joint reinforcing support structure suitable for high-cold regions. BACKGROUND

[0002] Prestressed bridge is a common type of bridge in structural engineering, which uses pre-applied prestress and the properties of concrete to increase the carrying capacity and durability of the bridge. In prestressed bridges, prestressed steel bars or prestressed tendons are introduced into the concrete of bridge components such as beams, slabs, columns, etc., by applying a predetermined tensile force to generate internal compressive stress, so that the concrete is in a state of compression. After the prestressed steel bars or prestressed tendons are applied with prestress, they try to stretch back to their original state, while the concrete bears the compressive stress caused by the prestress. The introduction of prestress makes the bridge structure have better performance under normal use and load, including higher carrying capacity, smaller deflection and deformation, better crack resistance and longer service life. The prestress of prestressed bridges can be applied in various ways, the most common method is to use tensioning equipment and anchoring system. The application of prestress is usually carried out during the production of bridge components, before the concrete reaches sufficient strength, and after the concrete reaches the design strength, anchoring is carried out, so as to ensure that the prestress is effectively transmitted to the concrete and the bridge components have the required strength and stiffness. In order to improve the construction speed of the bridge, the bridge is usually spliced by prefabricated box girders, and the splicing of the prefabricated box girders is located on the bridge column.

[0003] However, the existing prestressed bridge has the following problems in the process of construction and use: for some bridges built in high-cold regions, due to the large temperature difference and the pouring of rainwater and icing at the bridge deck splicing joint, the gap at the bridge deck splicing joint may expand over a long period of time, affecting the stability and safety of the bridge, and there is a lack of means for reinforcing the bridge deck joint in high-cold regions. SUMMARY

[0004] The purpose of the present application is to provide a bridge deck splicing joint reinforcing support structure suitable for high-cold regions, which solves the technical problem that for some bridges built in high-cold regions, due to the large temperature difference and the pouring of rainwater and icing at the bridge deck splicing joint, the gap at the bridge deck splicing joint may expand over a long period of time, affecting the stability and safety of the bridge, and there is a lack of means for reinforcing the bridge deck joint in high-cold regions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bridge deck splicing node reinforcement support structure suitable for high-altitude and cold regions, comprising a box girder body, a bridge column, an insertable hot melt flow guide component, and a node reinforcement support mechanism. The bridge column includes a support column and a tray installed on the top of the support column. An installation groove is provided in the middle of the tray, and the splicing point of two adjacent sets of box girder bodies is located in the installation groove. The insertable hot melt flow guide component is a three-section structure and includes a main hot plate and auxiliary hot plates symmetrically arranged on both sides of the main hot plate. Hot melt blades are connected to the top of the main hot plate and the two sets of auxiliary hot plates. The node reinforcement support mechanism is divided into two sets and symmetrically installed on the support column. The two sets of node reinforcement support mechanisms are located on both sides of the tray.

[0006] The main heating plate includes a horizontal plate and several sets of electric heating elements evenly installed on the horizontal plate. The upper ends of the several sets of electric heating elements are connected to the bottom of the hot melt blades. The auxiliary heating plate has the same structure as the main heating plate.

[0007] The node reinforcement support mechanism includes a first position adjuster, a second position adjuster, a sliding rod, a slider, and a support block. The first position adjuster is installed on the top of the support column and its inner end cooperates with the second position adjuster. The sliding rod is fixed to the outer end of the second position adjuster. The slider is divided into two groups and symmetrically installed at both ends of the sliding rod. The edge of the support column is symmetrically provided with two sets of guide grooves. The support blocks are divided into two groups and are slidably disposed in the guide grooves. The upper end of the support block is connected to the bottom of the box girder body through an anchor rod. The inner side of the support block is provided with a sliding groove, and the slider is slidably disposed in the sliding groove.

[0008] Furthermore, the horizontal plates on the main heating plate are horizontally distributed, and the horizontal plates on the auxiliary heating plate are inclined. The three sets of horizontal plates are connected by cables, and the cables are connected to the electric heating elements.

[0009] Furthermore, the hot-melt blade is made of thermally conductive material and has a long strip structure. The length of the hot-melt blade is the same as the width of the splicing node of the box girder body, and the top of the hot-melt blade is machined into a flow channel.

[0010] Furthermore, the height of the middle part of the flow channel is greater than the height of both ends, and drainage holes are formed at both ends of the flow channel.

[0011] Furthermore, the first position adjuster includes a fixed plate, a drive shaft, an outer plate, and a mounting base. The fixed plate is fixed to the top of the support column and a pin is inserted through the top. The drive shaft is threaded through the fixed plate and its outer end is connected to the outer plate. The inner end of the drive shaft is inserted into the mounting base, and the inner end of the drive shaft is machined with several sets of annular convex teeth.

[0012] Further, the second position adjuster comprises an outer frame, a driving sleeve and a threaded column, the outer frame is mounted on the top of the support column and an inner embedded groove is formed inside, the driving sleeve is rotationally arranged in the inner embedded groove, and the threaded column is threaded into the driving sleeve and the outer end is connected with the sliding rod.

[0013] Further, the surface of the driving sleeve is processed to form a plurality of sets of clamping teeth, the driving shaft is located below the driving sleeve, and the annular protruding teeth are engaged with the clamping teeth.

[0014] Further, the support block is in a trapezoidal structure and the inner end is formed with an inclined surface, the sliding groove is obliquely formed on the inclined surface, and the outer end distance of the two sets of support blocks is less than the inner end distance.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows:

[0016] 1. The reinforced bridge splicing node structure designed in the present application comprises a box girder body, a bridge column, an inserted hot melt flow guide assembly and a node reinforcement support mechanism, the splicing part of the box girder body is erected on the bridge column, the inserted hot melt flow guide assembly is inserted into the node, and when there is icing inside the splicing node of the box girder, the inserted hot melt flow guide assembly can be powered to heat and melt the ice inside the joint and to externally guide the melted ice water, thereby solving the problem of the expansion of the gap of the box girder splicing node caused by the icing of the bridge splicing node; in addition, the node reinforcement support mechanism can adjust the gap between the adjacent box girder splicing nodes according to the actual use needs, and can effectively improve the reinforcement effect of the bridge splicing node.

[0017] 2. The reinforced bridge splicing node structure designed in the present application can effectively solve the problem of the expansion of the gap of the bridge splicing node caused by the influence of the environment on the bridge, thereby improving the stability and safety of the bridge splicing node. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the present application;

[0019] Figure 2 is the structure schematic diagram of the inserted hot melt flow guide assembly of the present application;

[0020] Figure 3 is the structure schematic diagram of the hot melt blade of the present application;

[0021] Figure 4 is the top structure schematic diagram of the bridge column of the present application;

[0022] Figure 5 is the distribution structure schematic diagram of the driving shaft and the driving sleeve of the present application;

[0023] Figure 6 Figure is a schematic diagram of the support block structure of the present application.

[0024] In the figure: 1, box girder body; 2, support column; 3, tray; 4, mounting groove; 5, main heat guide plate; 6, auxiliary heat guide plate; 7, hot melt blade; 8, cross plate; 9, electric heating sheet; 10, first position adjuster; 11, second position adjuster; 12, slide rod; 13, sliding block; 14, support block; 15, guide groove; 16, sliding groove; 17, flow guide channel; 18, drainage hole; 19, fixing disc; 20, drive shaft; 21, outer disc; 22, mounting seat; 23, latch; 24, annular protruding tooth; 25, outer frame; 26, drive sleeve; 27, threaded column; 28, embedded groove; 29, clamping tooth. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-6 The present application provides a technical solution: a bridge deck splicing node reinforcing support structure suitable for high-cold regions, comprising a box girder body 1, a bridge column, an insert type hot melt flow guide assembly and a node reinforcing support mechanism. The bridge column comprises a support column 2 and a tray 3 mounted on the top of the support column 2. The middle part of the tray 3 is provided with a mounting groove 4, and the splicing part of the adjacent two groups of box girder bodies 1 is located in the mounting groove 4. The insert type hot melt flow guide assembly is a three-section structure and comprises a main heat guide plate 5 and two auxiliary heat guide plates 6 symmetrically arranged on both sides of the main heat guide plate 5. The top of the main heat guide plate 5 and the two auxiliary heat guide plates 6 is connected with a hot melt blade 7. The node reinforcing support mechanism is divided into two groups and symmetrically mounted on the support column 2. The two groups of node reinforcing support mechanisms are respectively located on both sides of the tray 3.

[0027] The main heat guide plate 5 comprises a cross plate 8 and a plurality of groups of electric heating sheets 9 uniformly mounted on the cross plate 8. The upper end of the plurality of groups of electric heating sheets 9 is connected with the bottom of the hot melt blade 7. The auxiliary heat guide plate 6 has the same structure as the main heat guide plate 5. The electric heating sheets 9 are electrified to heat the hot melt blade 7 for heat conduction.

[0028] The node reinforcing support mechanism comprises a first position adjuster 10, a second position adjuster 11, a sliding rod 12, sliding blocks 13 and support blocks 14, the first position adjuster 10 is installed at the top of the support column 2 and is matched with the second position adjuster 11 at the inner end, the sliding rod 12 is fixed at the outer end of the second position adjuster 11, the sliding blocks 13 are symmetrically installed at the two ends of the sliding rod 12, the edge of the support column 2 is symmetrically provided with two groups of guide grooves 15, the support blocks 14 are symmetrically provided with two groups and are slidably arranged in the guide grooves 15, the upper end of the support block 14 is connected with the bottom of the box girder body 1 through an anchor rod, the inner side of the support block 14 is provided with a sliding groove 16, and the sliding block 13 is slidably arranged in the sliding groove 16.

[0029] As shown in Figure 2 : the horizontal plates 8 on the main heat-conducting plate 5 are horizontally distributed, the horizontal plates 8 on the auxiliary heat-conducting plate 6 are arranged in an inclined manner, the three groups of horizontal plates 8 are connected through cables, the cables are connected with the electric heating pieces 9, and the angle between the cables and the box girder body 1 is matched.

[0030] As shown in Figure 3 : the hot-melting blades 7 are made of heat-conducting materials and have a strip-shaped structure, the length of the hot-melting blades 7 is the same as the width of the splicing joint of the box girder body 1, the top of the hot-melting blades 7 is formed with a flow guide cavity 17, the hot-melting blades 7 melt ice and guide the melted ice out through the flow guide cavity 17. The middle part of the flow guide cavity 17 is higher than the two ends, and the two ends of the flow guide cavity 17 are formed with drainage holes 18.

[0031] As shown in Figure 4 : the first position adjuster 10 comprises a fixed disc 19, a driving shaft 20, an outer disc 21 and a mounting seat 22, the fixed disc 19 is fixed to the top of the support column 2 and the top is inserted with a latch 23, the driving shaft 20 is threadedly inserted into the fixed disc 19 and the outer end is connected with the outer disc 21, the inner end of the driving shaft 20 is inserted into the mounting seat 22, the inner end of the driving shaft 20 is formed with a plurality of annular protrusions 24, when two groups of prefabricated box girders are spliced and installed, the two groups of prefabricated box girders are placed in the installation groove 4, then the splicing joint gap between the box girders is adjusted according to the need through the cooperation of the first position adjuster 10 and the second position adjuster 11, specifically, the driving shaft 20 drives the driving sleeve 26 to rotate, the driving sleeve 26 drives the threaded column 27 inside to move horizontally in the process of rotating, the threaded column 27 pushes the sliding rod 12 to adjust the position, the sliding rod 12 can push the two groups of support blocks 14 to adjust the distance in the process of moving outward, thereby adjusting the splicing joint of the box girder, when the sliding rod 12 moves inward, the distance between the two groups of support blocks 14 is expanded, when the sliding rod 12 moves inward, the distance between the two groups of support blocks 14 is reduced.

[0032] As shown in Figure 4As shown: the second position regulator 11 includes an outer frame 25, a drive sleeve 26 and a threaded column 27, the outer frame 25 is mounted on the top of the support column 2 and an inner recess 28 is formed inside, the drive sleeve 26 is rotationally arranged in the inner recess 28, and the threaded column 27 is threaded into the drive sleeve 26 and the outer end is rotationally connected with the sliding rod 12.

[0033] As shown: the surface of the drive sleeve 26 is processed to form a plurality of sets of clamping teeth 29, the drive shaft 20 is located below the drive sleeve 26, the annular convex teeth 24 are engaged with the clamping teeth 29, the drive sleeve 26 is rotated by the rotation of the drive shaft 20, and the threaded column 27 inside the drive sleeve 26 is adjusted in position during the rotation of the drive sleeve 26. Figure 5 As shown: the support block 14 is in a trapezoidal structure and the inner end is formed with an inclined surface, the sliding groove 16 is obliquely formed on the inclined surface, when the sliding block 13 is located at the inner end of the sliding groove 16, the outer end spacing of the two sets of support blocks 14 is less than the inner end spacing, and such a design can adjust the spacing of the two sets of support blocks 14 and the box girder body 1 during the movement of the sliding rod 12.

[0034] Figure 6 As shown: the support block 14 is in a trapezoidal structure and the inner end is formed with an inclined surface, the sliding groove 16 is obliquely formed on the inclined surface, when the sliding block 13 is located at the inner end of the sliding groove 16, the outer end spacing of the two sets of support blocks 14 is less than the inner end spacing, and such a design can adjust the spacing of the two sets of support blocks 14 and the box girder body 1 during the movement of the sliding rod 12.

[0035] In use, when two adjacent groups of precast box girders are spliced and installed, the two groups of precast box girders are placed in the installation groove 4, and then the joint gap between the box girders is adjusted by the cooperation of the first position regulator 10 and the second position regulator 11 as needed, specifically, the drive sleeve 26 is rotated by rotating the drive shaft 20, the threaded column 27 inside the drive sleeve 26 is moved horizontally during the rotation of the drive sleeve 26, the sliding rod 12 is adjusted in position by the threaded column 27, the sliding rod 12 can push the two sets of support blocks 14 to adjust the spacing during the outward movement, thereby adjusting the joint of the box girder, when the sliding rod 12 moves inward, the spacing of the two sets of support blocks 14 is expanded, when the sliding rod 12 moves inward, the spacing of the two sets of support blocks 14 is reduced, and the two sets of joint reinforcing support mechanisms on both sides of the box girder bottom can further limit and reinforce the bridge joint splicing, in addition, when there is icing in the bridge joint gap, the electric heating sheet 9 is electrified to heat the heat melting blade 7, and the melted water is guided outward through the flow guide cavity 17.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.​

Claims

1. A bridge deck splicing joint reinforcement support structure suitable for high-altitude and cold regions, characterized in that: The utility model relates to a box girder body (1), bridge column, insert type hot melt flow guide component and node reinforcing support mechanism, the bridge column includes support column (2) and installs tray (3) on the top of support column (2), the middle part of tray (3) is equipped with installation groove (4), and the splicing of adjacent two groups of box girder body (1) is located in installation groove (4), the insert type hot melt flow guide component is three -section structure and includes main heat guide plate (5) and symmetrically set up in the auxiliary heat guide plate (6) of main heat guide plate (5) both sides, and the top of main heat guide plate (5) and two groups of auxiliary heat guide plate (6) are connected with hot melt blade (7), and the node reinforcing support mechanism is divided into two groups and is symmetrically installed on support column (2), and two groups of node reinforcing support mechanism are located on the both sides of tray (3) respectively, The main heat guide plate (5) includes the horizontal plate (8) and the even installation of several groups of electric heating sheet (9) on horizontal plate (8), and the upper end of several groups of electric heating sheet (9) is connected with the bottom of hot melt blade (7), and the auxiliary heat guide plate (6) is same with the structure of main heat guide plate (5), The node reinforcing support mechanism includes first position regulator (10), second position regulator (11), slide rod (12), sliding block (13) and support block (14), the first position regulator (10) is installed on the top of support column (2) and the inner end is used with second position regulator (11), the slide rod (12) is fixed on the outer end of second position regulator (11), the sliding block (13) is divided into two groups and is symmetrically installed on the both ends of slide rod (12), the edge of support column (2) is symmetrically equipped with two groups of guide slot (15), the support block (14) is divided into two groups and is respectively slidably arranged in guide slot (15), the upper end of support block (14) is connected with the bottom of box girder body (1) through anchor rod, the inner side of support block (14) is equipped with sliding slot (16), and the sliding block (13) is slidably arranged in sliding slot (16), The first position regulator (10) includes fixed disc (19), drive shaft (20), outer disc (21) and mounting seat (22), the fixed disc (19) is fixed on the top of support column (2) and the top is inserted with latch (23), the drive shaft (20) is screwed on the fixed disc (19) and the outer end is connected with outer disc (21), the inner end of drive shaft (20) is inserted on mounting seat (22), and the inner end of drive shaft (20) is processed into a plurality of annular convex teeth (24). The second position regulator (11) comprises an outer frame (25), a driving sleeve (26) and a threaded column (27), the outer frame (25) is mounted on the top of the supporting column (2) and an inner embedded groove (28) is formed inside, the driving sleeve (26) is rotationally arranged in the inner embedded groove (28), the threaded column (27) is threaded into the driving sleeve (26) and the outer end is connected with the sliding rod (12); the surface of the driving sleeve (26) is processed to form a plurality of groups of clamping teeth (29), the driving shaft (20) is located below the driving sleeve (26), the annular convex teeth (24) are engaged with the clamping teeth (29); the supporting block (14) is in a trapezoidal structure and the inner end is formed with an inclined surface, the sliding groove (16) is obliquely arranged on the inclined surface, and the outer end distance of the two groups of supporting blocks (14) is smaller than the inner end distance.

2. The bridge deck splicing joint reinforcing support structure suitable for high-cold regions according to claim 1, characterized in that: The horizontal plates (8) on the main heat conduction plate (5) are horizontally distributed, the horizontal plates (8) on the auxiliary heat conduction plate (6) are obliquely arranged, the three groups of horizontal plates (8) are connected through cables, and the cables are connected with the electric heating pieces (9).

3. The bridge deck splicing joint reinforcing support structure suitable for high-cold area of claim 1, wherein: The hot melting blade (7) is made of heat conductive material and is in a strip-shaped structure, the length of the hot melting blade (7) is the same as the width of the splicing joint of the box girder body (1), and the top of the hot melting blade (7) is processed to form a flow guide cavity (17).

4. The bridge deck splicing joint reinforcing support structure suitable for high-cold regions according to claim 3, characterized in that: The middle part of the flow guide cavity (17) is higher than the two ends, and the two ends of the flow guide cavity (17) are formed with drainage holes (18).

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